Fluffy Sweet Potato Biscuits with Sourdough Discard 

These fluffy sweet potato biscuits are soft, buttery, and made with sourdough discard for a subtle tang. A cozy, from-scratch recipe perfect for fall breakfasts, holiday dinners, or anytime comfort food.

There’s something magical about baking from scratch.

It’s not about perfection—it’s about the smell of something warm rising in the oven, the satisfaction of using ingredients you already have, and that deep-down comfort that comes from real food, made by hand. And I’m here to remind you: cooking from scratch doesn’t have to be complicated. In fact, some of the most delicious things come together with just a handful of wholesome ingredients and a few simple steps.

That’s exactly what these Fluffy Sweet Potato Biscuits with Sourdough Discard are all about. Soft, buttery, just the right amount of sweet, and boasting a gentle tang from the sourdough discard, these biscuits are the ultimate in comfort baking. Whether you’re looking to make a cozy fall breakfast, serve something special at your Thanksgiving dinner, or simply use up that jar of sourdough discard sitting in your fridge, this easy recipe for homemade biscuits is a keeper.

I started my sourdough journey during a season of life when I craved slower rhythms and real nourishment—and I haven’t looked back. Sourdough has become a part of my kitchen rhythm, and finding creative ways to use discard has been such a satisfying part of the process. These biscuits are one of my favorite ways to give new life to that byproduct—and I think they’ll become one of yours too!

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Why You’ll Love These Biscuits

• They’re flaky, tender, and just sweet enough to feel indulgent. 
• The sweet potato adds moisture and subtle earthiness, while the sourdough discard brings depth of flavor and that unmistakable tang. This isn’t a yeast-rise recipe—it’s a quick biscuit with a sourdough twist, which means no waiting, no proofing, and no kneading beyond a few gentle folds.
• Perfect for busy mornings, holiday spreads, or late-night comfort food cravings.

Key Ingredients (and Why They Matter)

Let’s walk through the essential components of this recipe before diving into the method. Understanding why we’re using these ingredients helps bring the whole process together.

• Cold Unsalted Butter—The golden rule of biscuit baking: keep your butter cold. The cold butter melts in the oven, creating steam pockets that help your biscuits rise tall and flaky. I often pop the butter in the freezer for a few minutes before grating it. Yes—grating! It’s one of my favorite tricks for evenly distributing butter without overworking the dough.
• Mashed Sweet Potato—One large sweet potato, cooked and mashed (or about ½ cup of canned puree), adds natural sweetness and moisture. Be sure to use plain sweet potato—no spices or additives. And here’s a pro tip: refrigerate it before mixing. You want your mashed sweet potato nice and cold so it doesn’t start melting the butter.
• Sourdough Discard—The star of the show! This recipe is a beautiful way to use that extra sourdough starter discard. It adds a gentle tang and richness to the dough without overpowering the other flavors.

Step-by-Step: How to Make Fluffy Sweet Potato Biscuits with Sourdough Discard

Preheat Your Oven—Set your oven to 425°F and line a baking sheet with parchment paper. Always preheat—getting that high initial heat helps the biscuits puff up beautifully

Mix the Dry Ingredients— In a large mixing bowl, whisk together your flour mixture. This ensures all the leavening agents are evenly dispersed.

Incorporate the Cold Butter—Now, grab your frozen (or well-chilled) stick of butter and shred it directly into your dry mix using a cheese grater. Don’t skip this step—it’s much easier than trying to cube the butter and cut it in. Once grated, use a pastry cutter (or fork) to incorporate the butter until the mixture looks like coarse crumbs. Small clumps of butter are totally okay—they’ll help create those flaky layers.

Stir Together the Wet Ingredients—In a separate large bowl, mix your sweet potato mixture of cold mashed sweet potato, sourdough discard, half & half (or buttermilk—yes, you can swap!). The texture should be smooth and creamy, but not runny–the right consistency matters! 

Bring the Dough Together—Pour the wet mixture into your dry ingredients. Here’s where things get beautifully messy. Use your hands to mix everything together until a shaggy dough forms. Don’t overmix—just work it enough so there are no dry flour bits.

Roll and Fold the Dough—On a lightly floured surface and turn out the dough on to your clean work surface. Roll it out gently into a rectangle, then fold it in thirds like a letter. This step is crucial. Why? Because it stacks layers of butter and dough, helping those biscuits puff into flaky perfection. Repeat the fold once more, then roll out the sweet potato biscuit dough to about 1-inch thickness.

Cut Your Biscuits—Here’s where I switch things up. For best results instead of using a round biscuit cutter or cookie cutter (which often leaves behind scraps), I use a pizza cutter or dough cutter to slice the dough into thick squares or rectangles. No waste, no rerolling. And guess what? They taste exactly the same.

Bake Until Golden Brown—Transfer your cut biscuits to the prepared baking sheet, spacing them slightly apart. Bake for around 15 minutes, or until the tops are lightly golden and the biscuits feel firm with a little give. Resist the urge to overbake—they’ll keep baking slightly once out of the oven.

Helpful Top Tips for Success

• Cold is key: Cold butter, cold sweet potato, and even a chilled bowl if your kitchen is warm. Warm dough = melted butter = flat biscuits.  You an also use a pastry blender to make the job of cutting the butter into your dough much easier.
• Don’t overmix: Once the dough comes together, stop mixing. Overworking the dough develops gluten, which leads to a tough biscuit.
• Be sure to refrigerate your mashed sweet potatoes so that it’s nice and cold when you add it to the mix. Otherwise your biscuits will be less flaky. 

Serving Suggestions

These sweet potato biscuits are as versatile as they are delicious. Here are a few of my favorite ways to serve them:

• With Fried Chicken or Country Ham
  Make the ultimate Southern-style biscuit sandwich with a crispy piece of fried chicken or salty ham in the middle. Add a touch of honey butter if you’re feeling fancy.
• As a Thanksgiving Side
  Move over plain dinner rolls—these biscuits deserve a spot at your holiday table. Just imagine them with a swipe of cranberry sauce. Divine.
• For Breakfast with Honey Butter
  Whip up some honey butter and slather it onto a warm biscuit. Pair with coffee or hot tea and cozy up for a slow morning.

Recipe FAQ

More Biscuit Recipes to Try

If you love these, don’t miss:

• Cinnamon Sourdough Biscuits–A warm, spiced twist on the classic with swirls of cinnamon and a buttery crumb.
• The Best Sourdough Biscuits–Tried-and-true, light and fluffy, with the perfect sourdough tang.

Final Thoughts

Making biscuits from scratch might sound like a weekend project, but once you get the rhythm, it becomes second nature. A few simple tricks—cold ingredients, gentle handling, and a smart fold—make all the difference.

These sweet potato biscuits have become a staple in our home. They’re nostalgic, comforting, and just a little bit special. And they’re a beautiful way to use sourdough discard without the wait or stress of a full-rise bread project.

So if you’ve got some extra starter, a sweet potato in the pantry, and a few spare minutes—give this recipe a try. Your kitchen will smell incredible, your heart will feel full, and I promise… your biscuits will be flaky.